Recovery of fiber and asphalt from roofing-scrap.



ASPHALT PAVING- COMPANY,

SAg @Fl lfiE.

0F PHILADELP BENJAMIN A. ALLISON, 0F EDWARDSVILLE, ILLINOIS, ASSIGNOR TO THE BARBER HIA, PENNSYLVANIA, A CORPO- RATION OF WEST VIRGINIA.

RECOVERY OF FIBER AND ASPHALT FROM ROOFING-SCRAP.

Patented Feb. a, 11919.

1,293,293. Specification of Letters Patent. No Drawing,

To all whom it may concern:

Be it known that I, BENJAMIN A. ALLI- SON, a citizen of the United States, and a resident of Edwardsville, in the county of adison and State of Illinois, have invented certain new and useful Improvements in the Recovery of Fiber and Asphalt from Roofing-Scrap, whereof the following is a specification.

n the manufacture of prepared roofing, shingles, bituminous insulating paper, etc., t ere is considerable Waste material, which are defective in eans heretofore devised for the recovery from it of the fiber or asphalt have required expensive machinery, and great difficulty has been encountered in accomplishing the recovery or utilization thereof.

My process for the recovery and utiliza-- tion of it in an alkaline solution, y complete separation although a greater percentage of alkali being required in connection with heavily coated scrap roofing. In this solution I introduce the scrap material and raise the temperature of the mixture to the boiling 'point. isintegration is hastened by stirring it by any convenient mechanical means, such as a beating engine Application filed October 7, 1918. Serial No. 257,290.

ine solution, with sufiicient agitation, th

sarily present; but, notwithstanding the presence of this asphalt, my process produces a compact and fairly homogeneous mass of fiber. After the disintegration has been completed, the alkaline solution is drawn oil and may be used again in the treatment of subsequent batches of the same sort of material. The remaining fibrous material With such asphalt as is present, may be washed to remove t e'excess of alkali, although under some circumstances I find it advantageous to use the material Without Washing. This fib as refri erator cars,

rol mg the fibrous mass a made, the

Having thus described my invention, I 85 claim tion, removing the resulting disinte rated mass of fibrous and asphalt materia and rolling the same into sheets. I

e process of recovering fibrous and bituminous materials from roofi 'tation, removing the resulting disintegrated ice chests,

' meaaea mass of fibrous and asphalt material, adding additional asphalt thereto, and compressing 10 additional asphalt thereto, and rolling the the same into shape. I same into s ee s In witness whereof,1have hereunto signed 3. The process of recovering fibrous and my name, at Madison, Illinois, this 24th day bituminous materials from roofing scrap, of September 1918.

which consists in boiling the scrap in an BENJAMIN A. ALLISQN. alkaline solution, accompanied with agita- Witnesses: v tion, removing the resulting disintegrate JOHN M. CONNELL,

mass of fibrous and asphalt material, adding WELDON G. HUFFMAN. 

